Theory of the special Smith-Purcell radiation from a rectangular grating
Source abstract
Abstract
The recently uncovered special Smith-Purcell radiation (S-SPR) from the rectangular grating has significantly higher intensity than the ordinary Smith-Purcell radiation (SPR). Its monochromaticity and directivity are also much better. Here we explored the mechanism of the S-SPR by applying the fundamental electromagnetic theory and simulations. We have confirmed that the S-SPR is exactly from the radiating eigen modes of the grating. Its frequency and direction are well correlated with the beam velocity and structure parameters, which indicates its promising applications in tunable wave generation and beam diagnostic.
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Research context
OpenAlex topics: Gyrotron and Vacuum Electronics Research · Particle Accelerators and Free-Electron Lasers · Particle accelerators and beam dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of Science and Technology of China 1 National Synchrotron Radiation Laboratory, , Hefei, Anhui, 230029, China
Istituto Nazionale di Fisica Nucleare 2 , Laboratori Nazionali di Frascati, via E. Fermi 40, 00044 Frascati, RM, Italy
Funding
Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Natural Science Foundation of Anhui Province
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